Bump data-encoding from 2.4.0 to 2.5.0 in /packer

Bumps [data-encoding](https://github.com/ia0/data-encoding) from 2.4.0 to 2.5.0.
- [Commits](https://github.com/ia0/data-encoding/commits)

---
updated-dependencies:
- dependency-name: data-encoding
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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